摘要
本文以WLAN802.11b协议为标准,针对802.11b基带发射信号,在接收端对经过加扰、扩频调制等处理后的802.11b信号进行解调处理。通过同步算法确定接收信号子帧准确的起始位置,然后对同步后的数据进行频偏估计,并去除频偏和相偏。之后就可以根据数据信号的调制方式对数据信号进行相应的解调,实现数据发射端信号的可靠接收。
In this paper, WLAN 802.11 b protocol as the standard, for 802.11 b baseband transmission signal, at the receiving end of the scrambling, spread spectrum modulation and other processing of the 802.11 b signal demodulation processing. The accurate starting position of the received signal subframe is determined by the synchronization algorithm, and then the frequency offset estimation is performed on the synchronized data, and the frequency offset and the phase shift are removed. And then the data signal can be demodulated according to the modulation mode of the data signal to realize the reliable receiving of the signal of the data transmitting end.
出处
《软件》
2016年第10期59-63,共5页
Software
关键词
通信与信息系统
802.11b
同步算法
频率偏移
信号解调
Communication and information system
802.11b
Synchronization algorithm
Frequency offset
Signal demodulation
